Measuring circadian cycles: A simple temperature recording preparation

While measurement of temperature as an index of circadian rhythmicity is not a difficult task with infrahuman subjects, long-term monitoring of deep body temperature with human subjects poses numerous measurement and safety problems. A preparation is described that is highly accurate, inexpensive, chronic, comfortable, and eliminates safety problems associated with more traditional methods of temperature measurement.     

Children's attention to stimulus components with variation in relative salience of components and degree of stimulus integration

A total of 400 children at ages 5, 9, and 12 years were given a component selection task with stimuli differing in color and shape. Relative salience of these two stimulus components was manipulated across subjects in two ways: the standard shapes and colors from previous studies were compared with standard shapes in fluorescent colors, and the latter materials were compared with nonsense shapes in fluorescent colors. While fluorescence of color had little effect, the replacement of standard shapes with nonsense figures caused attention to be redirected from shape to color as the primary cue for learning. This effect was more pronounced at age 9 than at age 5. Apparently there is a greater tendency for older than for younger children to withdraw attention from a normally dominant component such as shape, when it is advantageous to adopt another feature such as color as the primary functional cue. An additional variable was integration of components (color within shape vs color as background for shape). Integration produced generally greater attention to color but did not affect the general pattern of salience effects.     

Memory and frequency estimation processes in a decision task

Two experiments examined the role of information storage and frequency estimation processes in a simple decision task. On each trial from one to five simultaneous sequences of information were presented, and subjects were required to monitor and respond to each sequence. In one study independent groups of subjects gave decisions, recognition responses. or frequency judgments. In a second study recall responses were obtained from subjects as part of the decision and frequency judgment tasks. Changes in performance as the number of simultaneous sequences increased suggested an independence of decisions from memory for specific information. Performance on the decision and frequency judgment tasks exceeded at times that which was possible on the basis of specific information available. Other data suggested that subjects in the frequency estimation tasks maintained an accurate frequency count when possible, but in the decision task kept little more than a record of their currently favored hypothesis. When direct counting was prevented in the second experiment. performance in the two tasks was not significantly different, suggesting that the two processes are very similar under such conditions.     

Theorizing the Temporal Aspect of Ikigai or Life Worth Living among Japanese University Students: a Mixed-Methods Approach

Although cross-cultural and non-Western studies have advanced our knowledge on well-being, many studies have adopted English words including ‘happiness’ as their guiding concepts, which may have limited and biased their insight. The current study is part of a larger mixed-methods project that theorizes how Japanese university students pursue ikigai or a life worth living. The first qualitative study, based on 27 photo-elicitation interviews, generated a grounded theory of houkousei, or life directionality. Our qualitative findings suggested that when students formed explicit associations among the past, present, and future, they gained strong ikigai feelings. These associations were developed either cognitively by mentally associating existing present experiences with the past or future, or behaviourally by strategically choosing current experiences more pertinent to the past or future than alternatives. These actions resulted in two subjective states: life legacy and life momentum. Life legacy was the perception that one’s past had meaningfully contributed to his or her present experiences, life, and self. Life momentum meant the belief that one’s present experiences were helping him or her achieve the desired future. Lastly, having defining past experiences and setting clear goals both facilitated the associative actions. To further validate this theory, we collected online survey data from a national sample of 672 Japanese students. Our quantitative results, based on partial least squares structural equation modelling (PLS-SEM), largely supported our theoretical model. Our findings are discussed in light of the ikigai and eudaimonic well-being literatures.